<?php
namespace common\models;

use Yii;
use yii\base\NotSupportedException;
use yii\behaviors\TimestampBehavior;
use yii\db\ActiveRecord;
use yii\web\IdentityInterface;

/**
 * This is the model class for table "{{%users}}".
 *
 * @property string $id 用户 ID
 * @property string $username 用户名
 * @property string $auth_key 密钥
 * @property string $password_hash 加密密码
 * @property string $password_reset_token 密码重置 Token
 * @property string $email 邮箱
 * @property string $mobile 手机
 * @property int $created_at 创建时间
 * @property int $updated_at 修改时间
 * @property int $is_admin 是否管理员
 * @property int $status 状态
 */

class Users extends ActiveRecord implements IdentityInterface
{
    const IS_ADMIN_NO = 0;      // 用户
    const IS_ADMIN_YES = 9;     // 管理员

    const STATUS_DELETED = 0;   // 删除
    const STATUS_BANED = 1;     // 禁用
    const STATUS_ACTIVE = 9;    // 启用

    /**
     * @inheritdoc
     */
    public function behaviors()
    {
        return [
            TimestampBehavior::className(),
        ];
    }
    /**
     * {@inheritdoc}
     */
    public static function tableName()
    {
        return '{{%users}}';
    }

    /**
     * {@inheritdoc}
     */
    public function rules()
    {
        return [
            [['username', 'auth_key', 'password_hash', 'mobile'], 'required'],
            [['created_at', 'updated_at', 'is_admin', 'status'], 'integer'],
            [['username'], 'string', 'max' => 30],
            [['auth_key'], 'string', 'max' => 32],
            [['password_hash', 'password_reset_token'], 'string', 'max' => 255],
            [['email'], 'string', 'max' => 60],
            [['mobile'], 'string', 'max' => 30],
            [['username'], 'unique'],
            [['email'], 'unique'],
            [['mobile'], 'unique'],
            [['password_reset_token'], 'unique'],
            ['status', 'default', 'value' => self::STATUS_ACTIVE],
            ['status', 'in', 'range' => [self::STATUS_ACTIVE, self::STATUS_BANED, self::STATUS_DELETED]],
        ];
    }

    /**
     * {@inheritdoc}
     */
    public function attributeLabels()
    {
        return [
            'id' => '用户 ID',
            'username' => '用户名',
            'auth_key' => '密钥',
            'password_hash' => '加密密码',
            'password_reset_token' => '密码重置 Token',
            'email' => '邮箱',
            'mobile' => '手机',
            'created_at' => '创建时间',
            'updated_at' => '修改时间',
            'is_admin' => '是否管理员',
            'status' => '状态',
        ];
    }

    /**
     * @inheritdoc
     */
    public static function findIdentity($id)
    {
        return static::findOne(['id' => $id, 'status' => self::STATUS_ACTIVE]);
    }

    /**
     * @inheritdoc
     */
    public static function findIdentityByAccessToken($token, $type = null)
    {
        throw new NotSupportedException('"findIdentityByAccessToken" is not implemented.');
    }

    /**
     * Finds user by username
     *
     * @param string $username
     * @return static|null
     */
    public static function findByUsername($username)
    {
        return static::findOne(['username' => $username, 'status' => self::STATUS_ACTIVE]);
    }

    /**
     * Finds user by password reset token
     *
     * @param string $token password reset token
     * @return static|null
     */
    public static function findByPasswordResetToken($token)
    {
        if (!static::isPasswordResetTokenValid($token)) {
            return null;
        }

        return static::findOne([
            'password_reset_token' => $token,
            'status' => self::STATUS_ACTIVE,
        ]);
    }

    /**
     * Finds out if password reset token is valid
     *
     * @param string $token password reset token
     * @return bool
     */
    public static function isPasswordResetTokenValid($token)
    {
        if (empty($token)) {
            return false;
        }

        $timestamp = (int) substr($token, strrpos($token, '_') + 1);
        $expire = Yii::$app->params['user.passwordResetTokenExpire'];
        return $timestamp + $expire >= time();
    }

    /**
     * @inheritdoc
     */
    public function getId()
    {
        return $this->getPrimaryKey();
    }

    /**
     * @inheritdoc
     */
    public function getAuthKey()
    {
        return $this->auth_key;
    }

    /**
     * @inheritdoc
     */
    public function validateAuthKey($authKey)
    {
        return $this->getAuthKey() === $authKey;
    }

    /**
     * Validates password
     *
     * @param string $password password to validate
     * @return bool if password provided is valid for current user
     */
    public function validatePassword($password)
    {
        return Yii::$app->security->validatePassword($password, $this->password_hash);
    }

    /**
     * Generates password hash from password and sets it to the model
     *
     * @param string $password
     */
    public function setPassword($password)
    {
        $this->password_hash = Yii::$app->security->generatePasswordHash($password);
    }

    /**
     * Generates "remember me" authentication key
     */
    public function generateAuthKey()
    {
        $this->auth_key = Yii::$app->security->generateRandomString();
    }

    /**
     * Generates new password reset token
     */
    public function generatePasswordResetToken()
    {
        $this->password_reset_token = Yii::$app->security->generateRandomString() . '_' . time();
    }

    /**
     * Removes password reset token
     */
    public function removePasswordResetToken()
    {
        $this->password_reset_token = null;
    }

    public function getRoleName()
    {
        return $this->checkIsAdmin() ? '管理员' : '访客';
    }

    public function checkIsAdmin()
    {
        return $this->is_admin == self::IS_ADMIN_YES;
    }
}
